/********************************************************************** * File: tprintf.cpp * Description: Trace version of printf - portable between UX and NT * Author: Phil Cheatle * Created: Wed Jun 28 15:01:15 BST 1995 * * (C) Copyright 1995, Hewlett-Packard Ltd. ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** http://www.apache.org/licenses/LICENSE-2.0 ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. * **********************************************************************/ // Include automatically generated configuration file if running autoconf. #ifdef HAVE_CONFIG_H #include "config_auto.h" #endif #include #include #include "ccutil.h" #include "params.h" #include "strngs.h" #include "tprintf.h" #define MAX_MSG_LEN 65536 #define EXTERN // Since tprintf is protected by a mutex, these parameters can remain global. DLLSYM STRING_VAR(debug_file, "", "File to send tprintf output to"); DLLSYM void tprintf_internal( // Trace printf const char *format, ... // Message ) { tesseract::tprintfMutex.Lock(); va_list args; // variable args static FILE *debugfp = nullptr; // debug file // debug window int32_t offset = 0; // into message static char msg[MAX_MSG_LEN + 1]; va_start(args, format); // variable list // Format into msg #ifdef _WIN32 offset += _vsnprintf(msg + offset, MAX_MSG_LEN - offset, format, args); if (strcmp(debug_file.string(), "/dev/null") == 0) debug_file.set_value("nul"); #else offset += vsnprintf(msg + offset, MAX_MSG_LEN - offset, format, args); #endif va_end(args); if (debugfp == nullptr && strlen(debug_file.string()) > 0) { debugfp = fopen(debug_file.string(), "wb"); } else if (debugfp != nullptr && strlen(debug_file.string()) == 0) { fclose(debugfp); debugfp = nullptr; } if (debugfp != nullptr) fprintf(debugfp, "%s", msg); else fprintf(stderr, "%s", msg); tesseract::tprintfMutex.Unlock(); }